Combination book and billing platen for type-writing machines.



"No. 843.022. -PATBNTBD PEB. 5.190?.

o. P. LAGANKE. COMBINATION BooK AND BILLING PLATEN PoR TYPE WRITING MACHINES.

y APPLICATION FILED MAY 11. 1905.

8 SHEETS-SHEET 1.

No. 043,022. PATENTED PEB. 5, 1007.

O. F. LAGANKE.'

COMBINATION BOOK AND BILLING PLATEN POR TYPE WRITING MACHINES. A l APPLwATIoN FILED 10001110005.

8 SHEETS-SHEET 2.

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| l i l l 1 i 66 4f E. I I I l I 35 3l 27 I l l z o i@ I I g5 344 l 6 3a 1 Y' x I r 7 l: l I 7 I I -w 3400 l 1 Y l l Z7-35.1 l

I I l 31 37 g l 2 l l' l 1 l I I l I l PATENTED PEB. 5, 1907.

` @Inma/INEE. UOMBINATION .BooK AND BILLING PLAIEN PoR TYPE WRITING MACHINES.

APPLICATION FILED MAY 11.1905.

v 8 SHEETS-SHEET 3.

.NN w @ws P No. 843,022 PATENTED IEB/5, 1907.

0. I. LAGANKN. COMBINATION BooK ANDBILLING PLATEN ION TYPE WRITING MACHINES. PPLITION FILED MAY 1l, 1905.

s SHEETS-SEHEN.

Char/les attenua/14 @9i/kwamen,

PATENTED PEB. 5, 1907.

- C. F. LAGANKE. COMBINATION BOOK AND BILLING PLATEN FOR TYPE WRIT ING MACHINES.

AIfPLIOATION FILED MAY 1l. 1905.

s SHEETS-HEBT 5.

y PATENTED :FEB.- 5

,. O. I'. LAGANKE. COMBINATION BOOK AND BILLING PLATEN POR TYPE WRITING MACHINES.

APPLICATION FILED MAY 11.1905.

8 SHEETS-SHEET 6.

PATBNTED PEB. 5,1907.

C. F; LAGANKE. N BOOK AND BILLING I LATEN FOR TYPE WRITING MACHINES.

APPLIUATIN FILED MAY 11,1905.

i 7. MEM m w w w 1,1 w m IIAI *IINIII vINB. 5, 1907.

c. ILAGANKE. COMBINATION BooK AND BILLINUI PLAINN IOR TYPE WRIIINGfMAGHINNs.

APPLICATION FILED MAY l1, 1905.

VC @oom UNITED- STATES- PATENT. OFFICE.

4)HRLES F. LAGANKE, "OF CLEVELAND, OHIO, ASSIGNORVT-O ELLIOTT- FISHER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELA? i WARE.

Ne.` 843,022.v

coMslNAnoN BooK AND BILLING PLATEN FOR TYPtwRuTlNG MACHINES.

`vPatented Feb. 5,1907.

. Application filed May 11,1905. i Serial No. 259,901.

vlBe' it known that I, CHARLES F. LAGANKE, a' citizen of, the United States,resi ding at Cleveland,in the vcounty of Cuyahoga and State of Ohio, have invented a new and useful Combination Book and Billing'Platen for Type-Vriting' Machines, of which the following is a specification."

--parts being depressible to a .position close` .platen for type-writiiig inachines.4

The objectof the invention -is to -provide a ilat base adapted .to rest'upon a table or desk, with a platen anda book-support adapted for joint. use in entering type-written records in books, the booksupport being removable from the base and the platen and associated above theA basesto 'facilitate the use` of .the platen for billing vpurposes when the booksuPOlt -is removed. f' Y' urther objects are to provide'i-iovel means for lsupporting the vertically-movable platen and a novel relation of the machine-support .ing fra-ine with respectto thepl'aten and the machine 4whereby said machine when iroved vback toits iearmost position will facilitate the upward swinging of the frame from the platen, whilenot actually performing that function. i

Another-object is toI inipilove the construe tion of the'book-support.`

Other `objects of to those enumerated will appearl as the succeeding description of the illustrated embodiinent of the invention is developed.

In the accompanying. drawings, Figure 1 is a side elevation of .the platen arranged for boekwerk', showing the machine-supporting frame elevated in dotted lines;l Fig; 2 isaplan View of the subjectm atter shown in Fig.- 1, with the machine omit-ted and the transferweb' broken away." Fig.v 3 vis 'an enlarged SCO transversescction sliowingthe liook in .pla-ce.

Fig, 4 is' a longitudinal*section'through the platen, base, and book-'support.` Fig. 5 is ai' longitudinal section -Witl'i the book-supportA removed from the base and the `platen de# pressed for liilling-work.'v Fig. 6 is a transverse section of the subject-matter show/iin- AFig. 5. i

Fig. 7 is a longitudinal section showing the base equipped with niecli'anisn'i for the invention subordinate` l raising and lowering the platen.' Fig. 8 is a transverse' section of the subject-matter of Fig. 7. Fig. 9 is adeta'il perspective view of the mechanism for raising and lowering the platen. Figs/10 and 11 are d etail-views of the front platen-supports disclosed inthe iirst six figures of the drawings. Figs'. 12 and4 13 are longitudinal sectional views ofthe This'inVentiQn relates -to a combination Abo'o'k and billing book-support with certain of the. parts designated asa whole bythe numeral 4.

posed tracks `5, which extend inwardly over the platei to prevent u ward displacement ofthe latter. 'The book-support 4 is thus slidably mounted on the base 1 and is readily removable from the latter when desired.

mounted thereon is disposed a horizontal ilat platen 6, supported by front and rear platen-supports 7 and 8, said platen being pivoted to the rear support `and resting platen to be swung up, if desired, to obtain vport.

'The rear platensu'pport 8 is 1n the forni of 'a rectangular frame, =comprising a pair of site sides ofthe base and connected byupper in Fig. 5, when itis desired to depress the platen. While the support 8 inay be swung .Troni swinging rearwardly by cooperating ,stops 10 and 10a, formed on the brackets and arins, as shown in Iiig. 11. The pivotal con- Along'the edges of the guideway 2 are disand` lower transverse bars 8b and 8C, the lower bar being journaled in brackets 9, se-v' cured to .the base in'order tov permit the supf port 8 to swing down over the base, as shown Y forward in the manner stated, it is prevented` broken away, and Fig. 14 is a plan view of the guideway 2, which. slidably receives the bot v `tom plate 3 of'a book-support, which may. bey

.8o Above` the base 1 and the book-support loosely upon the front support to enable said access to the subjacent book or book-supvertical arins 8a,V located adjacentto oppoi nection between the .platen and the rear platen-support S is eti'ected by providing said platen at the rear end thereof with a pair et depending bearing-brackets l1. which encircle the i'od 8" adjacent to the arms 8a, as shown in Fig. 3. By' this arrangement the platen may be swung up with the rod 8b as an axis and lowered again until its front end rests on the front platen-support 7. The support 7 comprises pair ol' io vertical arms 7a, having their lower ends connected by a transverse rod 7h, mounted to rotate in bearing-brackets 7C, located at opposite sides of the base and adjacent to the front end thereof. These brackets 7b (see i 5 F ig. 10) are formed to accommodate springs 7d, of spiralform, secured' to the brackets and to the support. '7 respectively, and exerting a constant tendency to retain the support in its vertical position and to resist swinging 2o movement/ot1 the support to the posi-ion shown in Fig. 5. The upper ends or' the ainis 7 a are notched, as indicated at 7e, to receive a bar Tf, secured to the under side ot the l platen. (See Fig.y 1.) Normally the front z5 and rear platen-supports 7 and S areI disposed vertically, ais shown in Fig.' 1, and the platen is supported at a sulricient distance above the base l to accoinniodate the booksupport. When, however, it is desired to 3o use the platen for billing purposes instead of fr bookwork, the book-su port 4 is renioved from the base 1 and t e platen is depressed to the position shown in-llig. is accomplished by slightly elevating the 3 5 front end ot the platen and swingingfthe. sup-' port 7 back. If now a slight-forward pull is exerted on .the platen, the latter .will drop down until adjacent to the upper surface of the base, being arrest-ed by contact, with the 4o supports7 which will now be in their depressed or horizontal positions.

The platen 6, shown in the drawings, is one of that class known commercially as an Elliott-Fisherl platen and is equipped with tracks or guides 12,extending along the op osite side edges thereof to support and guide the traveling ina/chine 13. (Shown ni Fig. 1.)

bar 14 to form what is known in the art as a 5o "'machine-supporting traine, which in this instance is extended. beyond the rear end ol`- the platen and is mounted to swing from the upper rod 8b ofthe rear platen-sul'iport 8.

This pivotal connection olz 'the .machine-supporting frame with the rod H is ell'ected by )earring-ears 15, dropped down from thetracks 12 and encircling the i'od bl the outer sides ol'v the arms 3'", and enlarged heads 16,With which the rod 8" is provided. 6J (Seo Fig. 3.) A

' It will be noted that the machiric-supporting li'aine adapted to swing independently of the platen from the rod S and that, the ol movement ol' said franc is thci'clore iocated at a point somewhat 'in advance ol' its 5. This The tracks 12 are connected bythe between I rear end. This relation of the parts is designed for the purpose ol enabling the inachinc 13 to be utilized as an aid to the operator in elevating that portion ol the traine which is disposed ovei' the platen. This will be understood by r terence to Fig. 1. When the machine 12S is moved back 'io its rearu-.ostposition and arrested by the machinestops 17 at therear ends olt the tracks, said machine will lie partl)v in lront andpaitly in rear ot the axis of the in:whine-supporting frame. In this position the nrachinc willnot ovcrbalance thil l'ranu, and thus etlect its.v

only slight elevation ot the frame is necessary to permit the manipulation of the work, and during such movement tlie machine constitutes a counterlnilance l'oit the machinesupporting traine. ltv is obvious7 however, that the tracks might be suiliciently extended beyond their axes of movement to permit the machine when in its rearmost position to -coniplctel y overbalanco the frame. x

.In addition vto the machinie-supportingv Vli'alue the platen is equipped with other appurt'enaiices---such, vfor instance, as a longitudinal lwork-holding tape 6, transverse work-holding and guarding members 6b, and a llongitudiiially-disposed transfer-web 6Cw all of which are carried' by and vertically movable with the inacltine-supporting frame..

'lhesc appurtenances are cominonto the Elliott-Fisher platen; but the illustrated manner of mounting thc carbon web is specifically novel. The opposite ends of this web 6" are mounted on spindles 154 and 19, as' usual; but -whilc the front spindle lh l'or the front carbon-roll is mounted, as usual, in brackets 18, depending from the front end of the machinesupporting l'ranie, the rearl spindle it) `for the rear carbon-roll is supported from the rearwariily-extended ends ol the brackets at a point considerably in' iar of the pivotal axis ol -the frame. ',lhis ideaof extending Vthe inaclililie-supporting frame rearwardly be- `youd the axis of movement lthereof and of vmounting the carbon-rolls and carriers on said traine, but beyond opposite sides of its` axis,is believcdat'o befnovel.l ln additionto this device l'or holding the work 'elements and 3 vl'oi' facilitating the prodiuztion of manifoldrecords the platen 1s equipped with one or more billing-strips 1Q, located at 'opposite lsides thereof in a ii'ianner well understood in the art and removable at least from one side ol the platen when the latter is to be used for IOO imokwork. ingrigs.' 2 and 3' the bilingstrip at the left-hand side of the platen is shown removed, so that the platen interposed between vthe leaves of a book can extend close to thefinner margin of the leaf to ive-'written on. As shown inFig. 3, the device is organ- 'ized f or the production ofen-original record on a loose leaf or sheet and for the transference of a carbon-record to the leaf of a book. The loose sheet and the leaf are shown v 'clamped upon the platen by the 'machine- -supporting frame,- and the transfer-web is Ashown interposed between the sheet and the .its

leaf. l/Vhen the record has been completed, the machine 13 nioves back'to the position shown in Fig'. 1, in which position, as heretofore stated, the inachineesupporting frame is nearly overbalanced-so nearly, in fact, that when'the machine is swung back slightly by .z.

the elevation of vthe frontend of the frame the arts will be substantially poised, thus 'requiring little or no exerti'on on the part of the operator to effect such manipulation of theframe asis necessary to facilitate lthe displacement, replacement, or adjustment .of-

the work sheets or leaves.

. When itis desired to use the platen for bill- 'ing purposes, in which event the record is transferred vto 'a loose sheet instead of to the so leaf of a book,'thebookholder t is slid out of .the base 1, the platen is dropped-down to the position shown ifi-Fig. in the manner heretofore described, and the billingstrip', which .jhasbeen removed,. is replaced. In Fig'. 6 the platen is shownreo'rganized for billing-works. y

' The construction shown in the first figures lofthe drawings is effective inasmuch as it 'paratively low plane to facilitate billing# workwhen it is not necessary-to interposeperinitsthel'plateii to vbe droppedtoa conithe book-support and book between the 'platenand the base.. It is possible, however, to provide mechanism for positively Figs 7 to 9, inclusive. A

arms 7 and 8? of the front and rear platen-- elevating and depressing tliefplaten, one form of such mechanism being shown in In these figures the .supports are 4formed below the axes of .such supports with toothed segments 20, meshing with worms 21', fixed to`orformed upon a air of. parallelworin-shafts 22, affordedfi bearings lin the:` baseA 1.'. Adjacent v-to- .their -front `end sthe worin-'shafts 22/ are provided wit'li'worni-iear's 23,;iries`hing with worms :24d

`on'.atrans`ve`rsejoper'atingshaft 25, eXtend- 1 acrosslthef frontend of the-base and prc` i 'lvit ed Withfanoperating'handle or 'crank 26..' -By rotatingfthe shaft 25 .the shafts 22 are ini" .tnrn' rotated, thus swinging the front and rearplatenrsupports to elevate lor depress theplaten. described,the'platcn-is hinged to the -rea'rxplat enlsupport, but restsloosely iipon ".thefroiit support to enable the platen tof'be swung` upwlien'` access/to the underlying In vthis"Construction, asin that depression in the base 1.

dicated by 7g in Fig. 7) is cylindrical and engages arcuate notches 7 h in the upperends of the arms This variation is desirable, because during the swinging of the supports 7 y the connection between them andthe platen', though separable, neccssaril y has the charac-. teristics of a hinge.

The book-support 4 comprises, as already stated, a base 3, which slides in and out 'of theV The base or bot` tom plate 3 of the book-support is provided along its side edges with rails 27, in the outer faces'- ofwhich are formed grooves or channels 23, adapted torcceive the inner edges of the tracks 5 when the book-support -is slid'- into the base l. (See Figs. 3 and 4.) rails 27 are vsecured a series of studs 29, upon which are mounted antifriction-rollers 30,- designed to travel upon the` tracks 5 and each having` a rubber oi other suitable noise-deadcningcovering 31. A v f Above the base 3 is mounted a rocker or rocker-frame '32. 'This frame comprises a pair of side bars 33, 'each 'having midway of its ends a hub 3 4, the opposite end portions of each. side bar eiitending from the hub in obtuse angular relation, as shown in Fig. 13. The side bars 33 are 4connected to forni a rigid frame struct-ureby means of transverse tie-bars '35.

passed through and fixed to the hubs 34 and extended into bearings 37-,jformed in the rails I 27.

The rocker-frame 82'is thus mounted to rock or tilt with the shaft 36 as an axis. Above the opposite ends of the rocker 32 are disposed `the book-supporting 4leaves or plates`38, each of which is supported by set` 'of crossed arins orlevers, o f whichthere are four for each plate, The crossed arins or le'- `vers of each set are indicated Aby 38', 382, 33,

and 384', the arms 38` and 382,1ieing crossed.l and located beyond oneY side of the rocker book or book-support is desired;v Instead, i

however, of utilizing abar 7f of angular cross-section, as shown in Fig. 1, this bar (1i1- This "rockerffraineis provided midway of its ends with a transverse shaft 36,

ICO

yframe and the arms 38.3.and 3S4 being;` simi larly crossed and located at the opposite side of said fra-ne. (See Fig. 14.)

Connecting the several crossed arms of each set is ka transverse bar 3fv).p'assed through slots -40 in the ends of the -side'bars 33 and serving 13o-connect two oppositely-disposed pairs-of arm sl andy also the arnts of eachpair at 'their points r of intersection; The arms 38 fand 138jarepivtally connected ,at ytheir inner .or lower ends' top the ,rails 27, indi-'j g cated at 41'.t.lie'opposite orupper ends of' said arms'being-provided with pins 4 2,"sli d"` ably mounted in'sl'o'tted brackets43,;se'cured 4tothe under sideofj-'the plate 33. The arms 382`and383are pivotally connected at rtheir upper ends to the plateI 38,' as indicated at 44, andat their lower ends are provided with pinss engaging slots 46 in the rails '13e By means oli' these crossed arms the leaf or inovenLr-'ut it-the other plaie, but in the opposite oirection--that is to say, it one plate SSis depressed the other plate is correspondingly elevate-'i j and vice versa.

While it is desirable to have the plates 3S adjustable to dillfefrent relative positions in order to accommodate the book in a manner well understood in tl i art, it, is also desirable to provide against /such l'reedom ot' movement ol' the 'leaves or plates as will enable them to shift their posi ions undesignedly. I therefore provide a ll'rirtional retarding device or brake which opposes, more or less?, l'i-ictional resistance to the movement of the rocker, and consequently' to the shifting of the plates 38. 'this braking-or retarding mechanism comprises a brake-bare?, disposed longitudinally of therocker-trame 32 between the side bars 33 and rigidly connected to the shalt 3() and the tie-bars 35, so that the brake-bar constitutes, in ell' rot, a part olt the rocker. At the opposite ends of the baril? are secured detachable wear-blocks or brakeshoes 4,8, each of which worlrs' between the jaws 49 of a clamp 50, the inner faces ol" said jaws being` provided with detachable wearplates 5l. Each clamp is preferably Vlormed l'rom' a single piece ol metal, which is bifureated longitudinally `to l'orm the laterallyyielding jaws 4). [n order to regulate the l'rictioi-ial resistance opposed to the movement ol` the rocker, the jaws olE each clamp are connected by an adjListing-screw which may be tightened or loosened to se- CUI'G just 'the desired resistance to the shiftingol' the book-supporting leaves 3S.

lt is thought that from the foregoing the construction and operation et my combina-- tion book and billingl platen will be fully conun'elumled; but Lwhile thepresent em-' bodiment of the invention is believed' at this time to be preferable l desire to reserve the right to ellect such changes, modifications, and variations ot' the illustrated structure as may come fairly within the scope 'ol" the` protection prayed.

What l claim isd Y 1. In a type-writing machine, the `combination with a base, ol'- front and rear platensupports carried thereby, a platen hinged to the rear support and resting upon the Yfront support, and a book support removably mounted on the base, both of the platen-supports being depressible to permit the platen to occupy a depressed position when thc book-support is 'removed lrom the base and a machille-stu)porting trame also hinged to the rearplaten-support and overlying/the platen and vd'epressible with the latter.

In a type-writing machine, the combination with a base, of front and rear platensupports hinged thereto, and a platen hinged to one of said supports and arranged to rest loosely upon the other, whereby said platen may be swung up from its nori'nalposition independently of the supports or depressed by lle swinging of the supports relative to the 3. In a type-writing machine, the combination with a base, of a book-support removably mounted thereon, front and rear platensupports hinged to the base, and a platen hinged to the real-,support and loosely supported by the iront support.

4. In a type-writing machine, the combination with a base having a transverse depression, a book-support slidably received therein, and iront and rear swinging platensupportsfot means carried by the base for swinging said supports, and a platen hinged to the rear platen-support and rested upon the frontplaten-support. A

5. rl'he combination with vertically-movable platen-supporting means, of. a platen sustained thereby, anda machine-supportingl frame including tracks or guides hinged intermediate` of their ends to the platen-supporting means.

G. In a type-writing machine, the combination with'v'ertically-movable platen-Supports, of a platen hinged to one of said supports, and a machine-supporting frame hinged to one of the platen-supports at a point in advance of the rear end of said trame and overlying the platen.

7. In a type-writing machine, the combination with verticall -movab'le platen-supporting means, of a p aten hinged at its rear end to the said supporting means, and a Inachine-supporting frame having its rear end extended beyond the rear end of the platen and hinged coaxially with the platen to the platen-supporting means. A

8. In a type-Writing machine, the combination with a base, of platen-supporting means hinged thereto, and a platen and a ma.-

'chine-supporting frame hinged independently of, each other to the platen-supporting means.

0. In a type-writing machine, the combinationwith a base, of front and rear platensupports carried by the base and vertically movable with respect thereto, a platen hinged to the rear platen-support and lresting `upon the front platen-support, andainachine-supporting frame arranged to overlie the platen and also hinged to the rear platen-support.`

-10. ln a type-Writing machine, the combination with a base, of front and rear platensupports hinged thereto, a platen hinged to -the rear support and resting loosely upon the front support, and a machine-supporting IIS frame overlying the platen and hinged to the rear platen-support. R

11. 4In a type-writing machine, the-combination with a base, of front and rear platensupports-hinged thereto, a platen'hingedto the rear support and resting loosely upon the front support, Ia machine-supporting'frame voverlying the platen and hinged to the rear platen-support, and means for swinging the 13. In a type-writing machine, the combi- :nationwith a vertically-adjustable platensupport, of a platen carried thereby, a ma-- chine-supporting frame hinged in advance of its rear end to the platen-support, a machine mounted to travel on the frame; and mea-ns for arrestingr the machine in position to con- 'stitute a substantial lcounterbalance for'the frame, whereby the latter may be readily swung slightly with reference to the platen to fa'cilitate'the manipulation of the Work.

14. A book-support comprising al pair of verticallv-moval'ile leaves, a separate support for each leaf, said sup ort `including two pairs of crossedarms, and) a transverse rod connecting the two pairs of arms and also connecting the armsvof'each air at their points ofin'tersection, and a roc er havingconnection with the transverse rodsofthe -two leafsupports to compel corresponding but opposite movements thereof.`

'15. A book-support, comprising a base, two leaves movable toward and from the base, a separate support for each leaf, each support including connected crossed arms each having pivotal connection with the base and leaf, certain of said pivotal connections heilig loose, and an angular rocker pivotcd at its middle to thei base and having operative connection at its opposite 'endswi'th the respective leaf-supports. y

16. A l'iook-support comprising a air of vertically-movable leaves, su'pports 'o r`the leaves, a rocker connecting the supports, and means associatod with thc'roc-k'er for opposing yielding resistance to'the movementthereof.

17. A boolr-suoport comprising a pair of vertically-111ovable leaves, supports for the leaves, a rocker connecting the supports to com pel corresponding opposite movements of vthe leaves,- a brake-bar movable with 'theroclcer, and a frictional deviceopposing the movement of the'bar.

y 18. A book-support-comprisiga pair of leaves, supports therefor, a rocker connecting the supportsa brake-bar movable with the rocker, and jaws engagingthe brake-bar land opposing frictional resistance to the movement thereof. 19. A book-support comprising a pair of .vertically-movable leaves, supports therefor,

a rocker connecting thesupports to compel corresponding opposite movements ofthe leaves, a brake-'b ar associated with the rocker, and clamps engaging' the-opposite ends of the brake-bar and opposing frictional resistance to the movement thereof.

20. A book-su port comprising a pair of vertically-movab e leaves, means compelling uniformv but opposite movementsv of sai leaves, and a retarding device opposing movement of the leaves, said device including a'pair of clamping-jaws,` a part frictionally engaged by the jaws, and adjusting means for the jaws..

21. In a type-writin .machine, the combination with a base, of ont and rear platensupports hinged at their lower ends to the base and located exclusively above. the bot-v 'tom ofthe latter to permit said base to rest upon a table-top, a platen supported by the upper ends ofy the platen-Supports and depressible when said supports are swung down ltoward the platen, aA machine-supporting frame associated with the platen, sald frame and platen being both hinged lto the'rear platen support, a transverse vuideway formed in the base between the front and rear platen-supports, and a book-support slidable in said guideway to and from a position beneath the platen whenthe latter` occupies an elevated position. l y 22. In a type-writin machine, the combination with a base, of Iront and' rear platen-. supports hinged at their lower ends to the` base and v'arranged to swing down parallel with the latter,- a book-support removably mounted on thebase betweenthe platensupports, a laten sustained by the .upper ends of the p atensupports and hinged to the rear laten-sup ort, anda machine-supporting ame over ying the laten and hinged independently thereof to tlie rear platen-suport,

P 23. In a type-writin machine, the combi- IIO nation with a base,'of ont and rear platensupports hin ed yto the base, a platen hinged to the rear p aten-supportv and resting upon the front platen-su port, a machine-supporting frame arrange to voverlie the platen and also hinged to-the rear platen-support, and

` means for swinging the platen-supports te lic the platen and also hinged to the rear platen-support, and a book-rest removably mounted on the base below the laten.

25. The Combination with a ase, oi front and rear platen-supports hin ed at theirA between the platen-supports.

26. In a type-writing machine, the c0mbination with a base,rof front and rear platensup'ports mounted to swing toward and from the base, a platen carried by said su ports, a nlachine-snpporting frame arran e to overlie the platen, an o erating meenanism carried by the base an engaging the lower ends ol the platen-supports to swing the latter for the purpose of raising or lowering the platen.

2. In a type-Writing machine, the combination with a base, of front and rear platensupports mounted on the base and including swinging arms having toothed segments at their lower ends, operating 'means mounted on the base and engaging the segments to swing the arms, and a platen carried bythe platen supports and vertically movable therewith. A

28. In a type-Writing machine, a base, front and rear platensupports carried thereby and each including 'a pair of swinging arms formed with toothed segments, worms engaging the several segments, operating means connnon to the several worms, and a platen sustained by the platen-sup ports and vertically movable therewith.

29. A book-support, comprising a base,4

two leaves movable toward and from the base, and a separate support for each leaf, each support including connected cross-arms each having pivotal connection with the base and leaf, and certain of said pivotal connections being loose.

30, In a type-writing machine, the combination with 'a base and a platen supported thereover, said base being formed with a guideway, of a booklsupport having a bot-l tom plate movable in the Guideway of the base, and tracks fixed to t e base and eX- tended over the bottom plate of the booksup ort to prevent upward displacement of the atter. 31. In a type-writing machine, the comblnation with a base formed with a guideway,

,of tracks extending along the opposite edges t J of the guideway, a book-support movable in the guideway of the base and havin a bottom plate formed with grooves or c iannels for the reception 'of the tracks, and means for supporting a platen above the book-support.

32. In a type-writin machine, the combination with a base, of l'ront and rear platensupports hinged at their lower ends to the base and'arranged to swing down upon the latter, a book-support movably mounted on the base between the platen-suports, a platen hinged to one support an resting upon the other, a machine-supportin frame overlying the platenand hinged in ependently thereof to the rear platen-support at a point removed from the rear end of said platen, a machine mounted to travel on the supporting-frame, and means for arresting the machine in position directly over the rear support to counterbalance the machine-supporting frame and thus facilitate the raising thereoii. I i

33. In a type-Writing machine, vthe combination with a fiat platen, of a7 hinged machine-supporting frame, a machine mounted to travel on said frame, and means for arrestir g the machine above the axis of movement of the frame to approximately counterbalance said frame. j

Intestimony that I claim the :foregoing as vmy own I have hereto aixed my signature in the presence of two witnesses. c

CHARLES F. LAGANKE Witnesses CnAs. J. LAGANKE, H. HSHELLENBERGER. 

